package com.cy.pj.goods.service;

import com.cy.pj.goods.dao.GoodsDao;
import com.cy.pj.goods.pojo.Goods;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;
/*
    此对象负责商品模块的业务逻辑处理
    1)通过数据层对象访问业务数据
    2)通过日志对象记录日志
    3)通过第三方框架进行权限控制
    4)还可以做Cache缓存
 */
@Service
public class GoodsServiceImpl implements GoodsService{
    private static final Logger log = LoggerFactory.getLogger(GoodsServiceImpl.class);

    @Autowired
    private GoodsDao goodsDao;

    @Override
    public List<Goods> findGoods() {
        long t1=System.currentTimeMillis();
        log.info("start {}",t1);
        List<Goods> list = goodsDao.findGoods();
        long t2=System.currentTimeMillis();
        log.info("end {}",t2);
        log.info("时间差"+(t2-t1));
        return list;
    }

    @Override
    public int deleteById(Integer id) {
        if (id==null||id<1) {
            throw new IllegalStateException("传入的ID值不合法");
        }
        long t1=System.currentTimeMillis();
        log.info("start {}",t1);
        int i = goodsDao.deleteById(id);
        long t2=System.currentTimeMillis();
        log.info("end {}",t2);
        log.info("时间差"+(t2-t1));
        return i;
    }
}
